kara-tem3

Aluminium ball.jpg


Aluminum ball project

Broad Question

How much mass does it take to sink aluminum balls?

Specific Question

What size does it take to sink the aluminum ball?

or

What size would make the aluminum ball float?

Variables

Independent Variable:

The diameter of the aluminum ball.(cm?)

Dependent Variable:

The depth of the aluminum ball.(cm)

Variables That Need To Be Controlled:

The aluminum ball ,Water and the Bowl

Hypothesis

I hypothesize that the bigger aluminum ball would sink because its mass is bigger.

Also, I think the smallest will float because of its small mass.

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Experimental Design

There will be three of use doing this in the team three science lab with my camera.
Three people will work hard on doing this stuff very well It doesn't matter if it sinks or floats in the water. I think it will be easy for you to do. When you put the aluminum ball it may float but it may sink. how much dense or mass it haves to help you when you need it will tell you what the wight will be like if the dense is Float the object haves to Float it will or if it Sinks then it will. That’s what you need to know how things Sink and Float. there are a lot of things that show you how things float and sink... objects sink when they have more dense then when it dose not have dense it will Sink or Float.

materials list

Bowl
Water
Aluminum foil
Meter stick
Camera

Detailed Procedure

1.Get Materials
2.Fill bowl up with water.(not too high :D)
3. Make a large Aluminum Ball.
4.Drop it in the water
5.Measure the depth and record it
6.See if it sinks or floats.
7.Then make a med. aluminum ball..
8. Repeat step form step 4-6
9.Then make the small aluminum ball.
10. Repeat steps form 4-6 again.
11. Repeat procedure for 5 more trails.

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Background Research

Buoyancy,

Buoyancy arises from fluid pressure and increases from the depth that it gets. The increased pressure is also exerted from all directions so the unbalanced force that makes the upward force on the bottom of the submerged object. if a object weighs more than the water displaces the object will sink. A object will also float in either gas or liquid if there is buoyancy. When density the ratio of mass to volume of an object matches the density of surrounding fluids it will neither sink or float. but it will also remain suspended in fluid. Buoyancy(N) = density of fluid(kg m -3) x acceleration due to gravity (m s -2 ) x volume of the immersed part of the object (m 3). Experimental Design 1. i will conduct my experiment in the science room. 2. three people will be involved doing this experiment 3. we will be doing 5 trials to get our full information. 5.we will be recording depth in our experiment 4. we will record the the data on a data table and then put our final info on to the computer and print it. Procedure 1. get all materials from mrs rice 2. bring the materials from mrs rice to the science room 3. set up materials and get ready for experimenting. 4. start doing the experiment 5. do the project as scheduled 6. when done write down with all trials write down the data. 7. when all data is collected type data on the computer 8. when typed print it out and then on the computer send it to Ms. Rice when done.

sinking and floating

Floating: If an object is less dense then water it will float.

Sinking: If an object is more dense then water it will sink.

Small amount of Mass = Float Mass =Sink in water. The reason why things sink or float is

because the gravity is pulling it down to make it sink.

Density determines if an object will sink or float.

Objects that are more dense than water will sink.

Objects that are less dense than water will float.

References"Sink, Float, Density, Surface Tension Misconceptions." Hun-Tel.net. Web. 20 Jan. 2012. <http://www.huntel.net/rsweetland/science/misconceptions/densitysurftensi.html>.

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Results

Data table

Graphs

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Data Analysis

Conclusion

The original purpose of this experiment was to find out what mass/size aluminum ball would sink the most, by using a ruler and a bowl of water. I did this by putting the aluminum ball (small one) in the water without THROWING it, because that would affect all the data. I put the ball in the water lightly. As it sank, I recorded its depth. Then I made a medium aluminum ball and put it in the water and measured the depth. I did this again for the big aluminum ball. The big aluminum ball had the biggest average.

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Discussion

My hypothesis was that the big aluminum ball would sink the most. My results support my hypothesis. The tests went great, because nothing went wrong. If I could improve my experiment I should have gotten the mass of the aluminum balls. This is because my question was how much mass sinks an aluminum ball. It didn’t really make sense by saying large, medium, or small for the mass.